CN209385444U - Multiple stage circulation filters hydraulic system - Google Patents
Multiple stage circulation filters hydraulic system Download PDFInfo
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- CN209385444U CN209385444U CN201822087440.1U CN201822087440U CN209385444U CN 209385444 U CN209385444 U CN 209385444U CN 201822087440 U CN201822087440 U CN 201822087440U CN 209385444 U CN209385444 U CN 209385444U
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Abstract
The utility model discloses a kind of multiple stage circulations to filter hydraulic system, including main fuel tank unit, servo action device, draining oil module, oil return oil module and main pump draining oil module, a part of oil liquid of main fuel tank unit enters servo action device, enter oil return oil module after the draining oil-tank filtering device that oil liquid a part of servo action device passes through draining oil module, another part flows directly into oil return oil module, filtering and oil return oil module are flow to after the oil-tank filtering device that another part hydraulic oil of main fuel tank unit passes through main pump draining oil module, remaining oil liquid of main fuel tank unit flows directly into oil return oil module, into oil return oil module all oil liquid by being back to main fuel tank unit after oil return oil-tank filtering device.By the above-mentioned means, the utility model multiple stage circulation filters hydraulic system, it can guarantee oil liquid by multistage filtering, the operation that servo action device can be made continual and steady, filter effect is good, reduces energy consumption, reduces the frequency of replacement filter core.
Description
Technical field
The utility model relates to hydraulic system fields, filter hydraulic system more particularly to a kind of multiple stage circulation.
Background technique
The quality of cleanliness of hydraulic oil will directly influence the reliability of hydraulic system work.Containing electrohydraudic servomechanism
Hydraulic system in, the fine structure of valve is complicated, and the sharp sword side of control valve core is easy to the solid contained in hydraulic oil
Particle is injured, and causes to control accuracy decline, can generating system control failure when serious.Rail vehicle testing stand actuator is adopted
With requiring oil cleanliness high servo actuator, and when testing stand operates normally it is required flow it is very big.Test is once
Need continuous operation for a long time, it is therefore desirable to a kind of hydraulic system that oil liquid can be stably maintained to high cleanliness.State
The interior current prior art, which is generallyd use, adds circulating filtration unit in hydraulic reservoir, and filter efficiency is lower.
Summary of the invention
The utility model can guarantee oil mainly solving the technical problems that provide a kind of multiple stage circulation filtering hydraulic system
Liquid passes through multistage filtering, and the operation that servo action device can be made continual and steady, filter effect is good, reduces energy consumption, reduces replacement filter
The frequency of core.
In order to solve the above technical problems, the technical solution that the utility model uses is: providing a kind of multiple stage circulation mistake
Filter hydraulic system, including main fuel tank unit, servo action device, draining oil module, oil return oil module and main pump draining oil
Box unit, a part of oil liquid of the main fuel tank unit enter servo action device, and oil liquid a part of the servo action device is logical
Enter oil return oil module after crossing the draining oil-tank filtering device of draining oil module, another part flows directly into oil return fuel tank list
Member, flow to after the oil-tank filtering device that another part hydraulic oil of the main fuel tank unit passes through main pump draining oil module filtering with
Remaining oil liquid of oil return oil module, the main fuel tank unit flows directly into oil return oil module, into oil return oil module
All oil liquid are back to main fuel tank unit after passing through oil return oil-tank filtering device.
In one preferred embodiment of the utility model, the main fuel tank unit includes main fuel tank, main fuel tank unit first
Hydraulic fluid port, the 4th hydraulic fluid port of the second hydraulic fluid port of main fuel tank unit, main fuel tank unit third hydraulic fluid port and main fuel tank unit, the servo action device
Including pressure oil port, oil return opening and draining hydraulic fluid port, the draining oil module includes draining fuel tank, the first oil of draining oil module
Mouth and the second hydraulic fluid port of draining oil module, the oil return oil module include oil return fuel tank, the first hydraulic fluid port of oil return oil module, return
Oily the second hydraulic fluid port of oil module, oil return oil module third hydraulic fluid port, the 4th hydraulic fluid port of oil return oil module and oil return oil module
Five hydraulic fluid ports, the main pump draining oil module include fuel tank, the first hydraulic fluid port of main pump draining oil module and main pump draining fuel tank list
First second hydraulic fluid port, the main fuel tank unit third hydraulic fluid port are connected with the pressure oil port of servo action device, the servo action device
Draining hydraulic fluid port L be connected with the first hydraulic fluid port of draining oil module, second hydraulic fluid port of draining oil module and oil return fuel tank list
First third hydraulic fluid port is connected, and the oil return opening of the servo action device is connected with the first hydraulic fluid port of oil return oil module, the main oil
The 4th hydraulic fluid port of box unit is connected with main pump draining the second hydraulic fluid port of oil module, the first hydraulic fluid port of fuel tank and oil return oil module the
Two hydraulic fluid ports are connected, and first hydraulic fluid port of main fuel tank unit is connected with the 4th hydraulic fluid port of oil return oil module, the main fuel tank list
First second hydraulic fluid port is connected with the 5th hydraulic fluid port of oil return oil module, between the second hydraulic fluid port of the draining fuel tank and draining oil module
It is provided with draining oil-tank filtering device, is provided with oil-tank filtering device between the fuel tank and main pump draining the first hydraulic fluid port of oil module,
Oil return oil-tank filtering device is equipped between the 4th hydraulic fluid port of the oil return fuel tank and oil return oil module.
In one preferred embodiment of the utility model, plunger pump group, the plunger pump group are connected on the main fuel tank
It is connected with main fuel tank unit third hydraulic fluid port and the 4th hydraulic fluid port of main fuel tank unit, the plunger pump group and main fuel tank unit third oil
High pressure filter is provided between mouthful.
In one preferred embodiment of the utility model, between the plunger pump group and main fuel tank unit third hydraulic fluid port successively
It is provided with main fuel tank flow sensor, main fuel tank overflow valve, high pressure filter, main fuel tank check valve and main fuel tank high-pressure ball valve,
Main fuel tank draining flow sensor is disposed between the 4th hydraulic fluid port of the plunger pump group and main fuel tank unit and main fuel tank is let out
Oil temperature sensor is equipped with main fuel tank butterfly valve, the main fuel tank and master between the first hydraulic fluid port of the main fuel tank and main fuel tank unit
It is equipped with main fuel tank between the second hydraulic fluid port of oil module and is connected to butterfly valve, the main fuel tank is additionally provided with main fuel tank air filter.
In one preferred embodiment of the utility model, between the second hydraulic fluid port of the draining fuel tank and draining oil module according to
It is secondary to be provided with draining fuel tank pump group, draining fuel tank check valve, draining oil-tank filtering device and draining fuel tank butterfly valve, the draining fuel tank
It is equipped with draining fuel tank between the first hydraulic fluid port of draining oil module and is connected to butterfly valve.
In one preferred embodiment of the utility model, be additionally provided on the draining fuel tank draining fuel tank air filter and
Draining oil tank liquid level sensor.
In one preferred embodiment of the utility model, the fuel tank is equipped with fuel tank pump group, and the fuel tank and main pump are let out
Fuel tank check valve, oil-tank filtering device, tank cooler and fuel tank ball valve are successively arranged between oily the first hydraulic fluid port of oil module, it is described
Fuel tank butterfly valve is equipped between fuel tank and main pump draining the second hydraulic fluid port of oil module.
In one preferred embodiment of the utility model, fuel tank overflow valve and fuel tank air filter are also connected on the fuel tank
Device.
In one preferred embodiment of the utility model, between the 4th hydraulic fluid port of the oil return fuel tank and oil return oil module according to
It is secondary to be equipped with frequency conversion pump group, oil return fuel tank check valve, oil return tank cooler, oil return oil-tank filtering device and oil return fuel tank butterfly valve, institute
It states and is equipped with oil return return oil filter of oil tank, the oil return fuel tank and oil return between the first hydraulic fluid port of oil return fuel tank and oil return oil module
It is equipped with oil return fuel tank between the 5th hydraulic fluid port of oil module and is connected to butterfly valve.The oil return fuel tank and the 5th hydraulic fluid port of oil return oil module it
Between be equipped with oil return fuel tank air filter.
The beneficial effects of the utility model are: the utility model multiple stage circulation filters hydraulic system, it can guarantee that oil liquid passes through
Multistage filtering is crossed, the operation that servo action device can be made continual and steady, filter effect is good, reduces energy consumption, reduces replacement filter core
The frequency.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings, in which:
Fig. 1 is the structural schematic diagram of the utility model multiple stage circulation filtering one preferred embodiment of hydraulic system；
Fig. 2 is the partial structural diagram of Fig. 1；
Fig. 3 is the partial structural diagram of Fig. 1；
Fig. 4 is the partial structural diagram of Fig. 1；
Fig. 5 is the partial structural diagram of Fig. 1；
The components in the drawings are labeled as follows: 1, main fuel tank unit, 101, main fuel tank, 102, plunger pump group, 103, high pressure
Filter, 104, main fuel tank flow sensor, 105, main fuel tank overflow valve, 106, main fuel tank check valve, 107, main fuel tank high pressure
Ball valve, 108, main fuel tank draining flow sensor, 109, main fuel tank draining temperature sensor, 110, main fuel tank butterfly valve, 111, master
Fuel tank connection butterfly valve, 112, main fuel tank air filter, main fuel tank unit the first hydraulic fluid port C1, main fuel tank unit the second hydraulic fluid port C2,
Main fuel tank unit third hydraulic fluid port C3, the 4th hydraulic fluid port C4 of main fuel tank unit, 2, servo action device, pressure oil port P, oil return inlet T, draining
Hydraulic fluid port L, 3, draining oil module, 301, draining fuel tank, 302, draining fuel tank pump group, 303, draining fuel tank check valve, 304, let out
Oily oil-tank filtering device, 305, draining fuel tank butterfly valve, 306, draining fuel tank connection butterfly valve, 307, draining fuel tank air filter,
308, draining oil tank liquid level sensor, draining oil module the first hydraulic fluid port A1, the second hydraulic fluid port of draining oil module A2,4, oil return oil
Box unit, 401, oil return fuel tank.402, frequency conversion pump group, 403, oil return fuel tank check valve, 404, oil return tank cooler, 405, return
Oily oil-tank filtering device, 406, oil return fuel tank butterfly valve, 407, oil return return oil filter of oil tank, 408, oil return fuel tank connection butterfly valve,
409, oil return fuel tank air filter, oil return oil module the first hydraulic fluid port B1, oil return oil module the second hydraulic fluid port B2, oil return fuel tank
Unit third hydraulic fluid port B3, the 4th hydraulic fluid port B4 of oil return oil module, the 5th hydraulic fluid port B5 of oil return oil module, 5, main pump draining fuel tank list
Member, 501, fuel tank.502, fuel tank pump group, 503, fuel tank check valve, 504, oil-tank filtering device, 505, tank cooler, 506, oil
Case ball valve, 507, fuel tank butterfly valve, 508, fuel tank overflow valve, 509, fuel tank air filter, main pump draining oil module the first hydraulic fluid port D1,
Main pump draining the second hydraulic fluid port of oil module D2.
Specific embodiment
Below by the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment is only a part of the embodiment of the utility model, instead of all the embodiments.Based on the implementation in the utility model
Example, all other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
Referring to Fig. 1, a kind of multiple stage circulation filters hydraulic system, including main fuel tank unit 1, servo action device 2, draining oil
Box unit 3, oil return oil module 4 and main pump draining oil module 5.
Main fuel tank unit 1 includes main fuel tank 101, the first hydraulic fluid port of main fuel tank unit C1, the second hydraulic fluid port of main fuel tank unit C2, master
The 4th hydraulic fluid port C4 of oil module third hydraulic fluid port C3 and main fuel tank unit is connected with plunger pump group 102, plunger pump on main fuel tank 101
Group 102 is connected with main fuel tank unit third hydraulic fluid port C3 and the 4th hydraulic fluid port C4 of main fuel tank unit.Plunger pump group 102 and main fuel tank list
Be disposed between first third hydraulic fluid port C3 main fuel tank flow sensor 104, main fuel tank overflow valve 105, high pressure filter 103,
Main fuel tank check valve 106 and main fuel tank high-pressure ball valve 107, between the 4th hydraulic fluid port C4 of plunger pump group 102 and main fuel tank unit successively
It is provided with main fuel tank draining flow sensor 108 and main fuel tank draining temperature sensor 109, main fuel tank 101 and main fuel tank unit
It is equipped with main fuel tank butterfly valve 110 between first hydraulic fluid port C1, main fuel tank is equipped between main fuel tank 101 and the second hydraulic fluid port of main fuel tank unit C2
It is connected to butterfly valve 111, main fuel tank also 101 is provided with main fuel tank air filter 112.
Servo action device 2 includes pressure oil port P, oil return inlet T and draining hydraulic fluid port L.
Draining oil module 3 includes draining fuel tank 301, draining oil module the first hydraulic fluid port A1 and draining oil module second
Hydraulic fluid port A2 is disposed with draining fuel tank pump group 302, draining between draining fuel tank 301 and the second hydraulic fluid port of draining oil module A2
Fuel tank check valve 303, draining oil-tank filtering device 304 and draining fuel tank butterfly valve 305, draining fuel tank 301 and draining oil module
It is equipped with draining fuel tank between one hydraulic fluid port A1 and is connected to butterfly valve 306.Draining fuel tank air filter 307 is additionally provided on draining fuel tank 301
With draining oil tank liquid level sensor 308.
Oil return oil module 4 includes oil return fuel tank 401, the first hydraulic fluid port of oil return oil module B1, oil return oil module second
Hydraulic fluid port B2, oil return oil module third hydraulic fluid port B3, oil return oil module the 4th hydraulic fluid port B4 and the 5th hydraulic fluid port B5 of oil return oil module,
Be successively arranged between the 4th hydraulic fluid port B4 of oil return fuel tank 401 and oil return oil module frequency conversion pump group 402, oil return fuel tank check valve 403,
Oil return tank cooler 404, oil return oil-tank filtering device 405 and oil return fuel tank butterfly valve 406, oil return fuel tank 401 and oil return fuel tank list
Oil return return oil filter of oil tank 407, the 5th hydraulic fluid port B5 of oil return fuel tank 401 and oil return oil module are equipped between the first hydraulic fluid port B1 of member
Between be equipped with oil return fuel tank and be connected to butterfly valve 408, oil return fuel tank is equipped between the 5th hydraulic fluid port B5 of oil return fuel tank 4 and oil return oil module
Air filter 409.
Main pump draining oil module 5 includes fuel tank 501, main pump draining oil module the first hydraulic fluid port D1 and main pump draining fuel tank
Unit the second hydraulic fluid port D2, fuel tank 501 are equipped with fuel tank pump group 502, fuel tank 501 and main pump draining the first hydraulic fluid port of oil module D1 it
Between be successively arranged fuel tank check valve 503, oil-tank filtering device 504, tank cooler 505 and fuel tank ball valve 506, fuel tank 501 and main
It pumps and is equipped with fuel tank butterfly valve 507 between the second hydraulic fluid port of draining oil module D2.508 He of fuel tank overflow valve is also connected on fuel tank 501
Fuel tank air filter 509.
Main fuel tank unit third hydraulic fluid port is connected with the pressure oil port of servo action device, the draining hydraulic fluid port L of servo action device
It is connected with the first hydraulic fluid port of draining oil module, the second hydraulic fluid port of draining oil module is connected with oil return oil module third hydraulic fluid port
Logical, the oil return opening of servo action device is connected with the first hydraulic fluid port of oil return oil module, and the 4th hydraulic fluid port of main fuel tank unit is let out with main pump
Oily the second hydraulic fluid port of oil module is connected, and the first hydraulic fluid port of fuel tank is connected with the second hydraulic fluid port of oil return oil module, main fuel tank list
First first hydraulic fluid port is connected with the 4th hydraulic fluid port of oil return oil module, second hydraulic fluid port of main fuel tank unit and oil return oil module the
Five hydraulic fluid ports are connected.
The specific working principle is as follows for the multiple stage circulation filtering hydraulic system of the utility model: testing stand servo actuator is shared
3 hydraulic fluid ports: pressure oil port P, oil return inlet T, draining hydraulic fluid port L.Main fuel tank unit is mainly that testing stand provides pressure oil, and oil liquid is through master
Oil module third hydraulic fluid port C3 passes through pipeline to examination pressure oil port P.The oil return of testing stand by oil return inlet T by pipeline into
Enter the first hydraulic fluid port of oil return oil module B1 of oil return oil module.The Leakage Energy of testing stand is entered by drain tap L by pipeline
The first hydraulic fluid port of draining oil module A1 of draining oil module.In order to guarantee that the oil cleanliness for supplying testing stand can stablize maintenance
At NAS4 grades, the oil liquid into main fuel tank has to pass through double-filtration.The Leakage Energy of testing stand enters after draining fuel tank 301 by pumping
Group 1 is delivered to back after filtering by draining fuel tank check valve 302, draining oil-tank filtering device 304, draining fuel tank butterfly valve 305
Oily unit 2.Meanwhile the filter efficiency in order to guarantee system, the Leakage Energy of plunger pump group 102 in main fuel tank unit 1 is passed through into pipe
Road is introduced to main pump draining oil module 5；102 Leakage Energy of plunger pump group is by fuel tank pump group 502 by fuel tank check valve 503, oil
Case filter 504, tank cooler 505, fuel tank ball valve 506 be filtered, cool down after be delivered to oil return oil module 4.Test
The oil return of platform enters before oil return fuel tank 401 by pipeline first passes through the filtering of return filter 407, subsequently into oil return fuel tank 401.
The plunger pump draining of the oil returns of all outsides, Leakage Energy and inside is to enter oil return fuel tank 401 after filtering together.
Oil return fuel tank 401 is arranged partition and increases oil return to the process of 402 inlet port of frequency conversion pump group, and oil liquid is enable to obtain sufficiently
Precipitating, cooling, defoaming.It is unidirectional by oil return fuel tank that frequency conversion pump group 402 sucks the oil liquid in oil return fuel tank by filtering together
Valve 403, oil return tank cooler 404, oil return oil-tank filtering device 405, oil return fuel tank butterfly valve 406 oil liquid is carried out again it is cooling and
Pass through Pipeline transport to main fuel tank 101 after refiltering.Main fuel tank 101 is arranged main fuel tank connection butterfly valve 111 and passes through a communicating pipe
It is connect with oil return fuel tank connection butterfly valve 408.The output flow of frequency conversion pump group 402 in oil return oil module is according to main fuel tank unit
The flow of 1 pressure oil output guarantees that the output flow of frequency conversion pump group 402 is greater than main fuel tank by the way of frequency conversion automatic adjustment
The flow of 102 pressure oil output of plunger pump group of unit 1.Always make to be connected to main fuel tank connection butterfly valve 111, oil return fuel tank connection butterfly
The flow direction of oil liquid is to prevent from main fuel tank unit the second hydraulic fluid port C2 to the 5th hydraulic fluid port B5 of oil return oil module in 408 pipelines of valve
Dirty oil in oil return fuel tank enters main fuel tank 101 to guarantee the oil liquid into main fuel tank 101 for cooling, after twice filter
Clean oil liquid.Hydraulic oil after double-filtration is delivered to after high pressure filter 103 filters again by plunger pump group 102
Testing stand pressure oil port P, until the hydraulic oil of pressure oil port P is the oil liquid after three-stage filtration.
It is different from the prior art, the utility model multiple stage circulation filters hydraulic system, and oil liquid can be guaranteed by multistage mistake
Filter, the operation that servo action device can be made continual and steady, filter effect is good, reduces energy consumption, reduces the frequency of replacement filter core.
The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all
Using equivalent structure or equivalent flow shift made by the utility model description, it is applied directly or indirectly in other phases
The technical field of pass, is also included in the patent protection scope of the utility model.
Claims (9)
1. a kind of multiple stage circulation filters hydraulic system, which is characterized in that including main fuel tank unit, servo action device, draining fuel tank
Unit, oil return oil module and main pump draining oil module, a part of oil liquid of the main fuel tank unit enter servo action
Device enters oil return fuel tank list after the draining oil-tank filtering device that oil liquid a part of the servo action device passes through draining oil module
Member, another part flow directly into oil return oil module, and another part hydraulic oil of the main fuel tank unit passes through main pump draining oil
Filtering and oil return oil module are flow to after the oil-tank filtering device of box unit, remaining oil liquid of the main fuel tank unit flows directly into back
Oily oil module, into oil return oil module all oil liquid by being back to main fuel tank unit after oil return oil-tank filtering device.
2. multiple stage circulation according to claim 1 filters hydraulic system, which is characterized in that the main fuel tank unit includes master
Fuel tank, the first hydraulic fluid port of main fuel tank unit, the second hydraulic fluid port of main fuel tank unit, main fuel tank unit third hydraulic fluid port and main fuel tank unit the 4th
Hydraulic fluid port, the servo action device include pressure oil port, oil return opening and draining hydraulic fluid port, and the draining oil module includes draining oil
The second hydraulic fluid port of case, the first hydraulic fluid port of draining oil module and draining oil module, the oil return oil module include oil return fuel tank, return
Oily the first hydraulic fluid port of oil module, the second hydraulic fluid port of oil return oil module, oil return oil module third hydraulic fluid port, oil return oil module the 4th
The 5th hydraulic fluid port of hydraulic fluid port and oil return oil module, the main pump draining oil module include fuel tank, main pump draining oil module first
Hydraulic fluid port and main pump draining the second hydraulic fluid port of oil module, the pressure oil port phase of the main fuel tank unit third hydraulic fluid port and servo action device
Connection, the draining hydraulic fluid port L of the servo action device is connected with the first hydraulic fluid port of draining oil module, the draining oil module the
Two hydraulic fluid ports are connected with oil return oil module third hydraulic fluid port, the first oil of oil return opening and oil return oil module of the servo action device
Mouth is connected, and the 4th hydraulic fluid port of main fuel tank unit is connected with main pump draining the second hydraulic fluid port of oil module, the first oil of fuel tank
Mouth is connected with the second hydraulic fluid port of oil return oil module, first hydraulic fluid port of main fuel tank unit and the 4th hydraulic fluid port phase of oil return oil module
Connection, second hydraulic fluid port of main fuel tank unit are connected with the 5th hydraulic fluid port of oil return oil module, the draining fuel tank and draining oil
Draining oil-tank filtering device is provided between the second hydraulic fluid port of box unit, between the fuel tank and main pump draining the first hydraulic fluid port of oil module
It is provided with oil-tank filtering device, is equipped with oil return oil-tank filtering device between the 4th hydraulic fluid port of the oil return fuel tank and oil return oil module.
3. multiple stage circulation according to claim 2 filters hydraulic system, which is characterized in that be connected with column on the main fuel tank
Pump group is filled in, the plunger pump group is connected with main fuel tank unit third hydraulic fluid port and the 4th hydraulic fluid port of main fuel tank unit, the plunger pump
High pressure filter is provided between group and main fuel tank unit third hydraulic fluid port.
4. multiple stage circulation according to claim 3 filters hydraulic system, which is characterized in that the plunger pump group and main fuel tank
It is unidirectional that main fuel tank flow sensor, main fuel tank overflow valve, high pressure filter, main fuel tank are disposed between unit third hydraulic fluid port
Valve and main fuel tank high-pressure ball valve are disposed with main fuel tank draining stream between the 4th hydraulic fluid port of the plunger pump group and main fuel tank unit
Quantity sensor and main fuel tank draining temperature sensor are equipped with main fuel tank butterfly between the first hydraulic fluid port of the main fuel tank and main fuel tank unit
Valve is equipped with main fuel tank between the second hydraulic fluid port of the main fuel tank and main fuel tank unit and is connected to butterfly valve, and the main fuel tank is additionally provided with master
Fuel tank air filter.
5. multiple stage circulation according to claim 2 filters hydraulic system, which is characterized in that the draining fuel tank and draining oil
Draining fuel tank pump group, draining fuel tank check valve, draining oil-tank filtering device and draining are disposed between the second hydraulic fluid port of box unit
Fuel tank butterfly valve is equipped with draining fuel tank between the first hydraulic fluid port of the draining fuel tank and draining oil module and is connected to butterfly valve.
6. multiple stage circulation according to claim 5 filters hydraulic system, which is characterized in that be additionally provided on the draining fuel tank
Draining fuel tank air filter and draining oil tank liquid level sensor.
7. multiple stage circulation according to claim 2 filters hydraulic system, which is characterized in that the fuel tank is pumped equipped with fuel tank
It is cold to be successively arranged fuel tank check valve, oil-tank filtering device, fuel tank between the fuel tank and main pump draining the first hydraulic fluid port of oil module for group
But device and fuel tank ball valve are equipped with fuel tank butterfly valve between the fuel tank and main pump draining the second hydraulic fluid port of oil module.
8. multiple stage circulation according to claim 7 filters hydraulic system, which is characterized in that be also connected with oil on the fuel tank
Case overflow valve and fuel tank air filter.
9. multiple stage circulation according to claim 8 filters hydraulic system, which is characterized in that the oil return fuel tank and oil return oil
Frequency conversion pump group, oil return fuel tank check valve, oil return tank cooler, oil return oil-tank filtering are successively arranged between the 4th hydraulic fluid port of box unit
Device and oil return fuel tank butterfly valve are equipped with oil return tank drainback between the first hydraulic fluid port of the oil return fuel tank and oil return oil module and filter
Device is equipped with oil return fuel tank between the 5th hydraulic fluid port of the oil return fuel tank and oil return oil module and is connected to butterfly valve, the oil return fuel tank and
Oil return fuel tank air filter is equipped between the 5th hydraulic fluid port of oil return oil module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822087440.1U CN209385444U (en) | 2018-12-13 | 2018-12-13 | Multiple stage circulation filters hydraulic system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822087440.1U CN209385444U (en) | 2018-12-13 | 2018-12-13 | Multiple stage circulation filters hydraulic system |
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| Publication Number | Publication Date |
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| CN209385444U true CN209385444U (en) | 2019-09-13 |
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ID=67871579
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611417A (en) * | 2018-12-13 | 2019-04-12 | 江苏恒立液压股份有限公司 | Multiple stage circulation filters hydraulic system |
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2018
- 2018-12-13 CN CN201822087440.1U patent/CN209385444U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611417A (en) * | 2018-12-13 | 2019-04-12 | 江苏恒立液压股份有限公司 | Multiple stage circulation filters hydraulic system |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 130000 No. 2001, Chang Ke Road, Changchun, Jilin Patentee after: CRRC CHANGCHUN RAILWAY VEHICLES Co.,Ltd. Patentee after: JIANGSU HENGLI HYDRAULIC Co.,Ltd. Address before: 213167 No. 99 Longqian Road, Wujin High-tech Zone, Changzhou City, Jiangsu Province Patentee before: JIANGSU HENGLI HYDRAULIC Co.,Ltd. Patentee before: CRRC CHANGCHUN RAILWAY VEHICLES Co.,Ltd. |
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| CP03 | Change of name, title or address |